Centrifugal fluid-fuel burner



Sept. 10, 1929. J. J. SIMMONS ET AL CENTRIFUGAL FLUID FUEL BURNER 2Sheets-Sheet 1 Filed June 15, 1928 INVENTORS lMMO/VS,

V ATTORNEYS.

Sept. 10, 1929- J. J. SIMMONS ET AL CENTRIFUGAL FLUID FUEL BURNER FiledJune 15, 1928 2 Sheets-Sheet 2 L/V/YEX INVENTOR5 JOHN J 5/MMO/VATTORNEYS.

Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

JOHN J. SIMMONS AND .RALPH J. DELANEY, OF PHILADELPHIA, PENNSYLVANIA,AS- SIGNORS OF ONE-THIRD TO JOHN N. M.SHIMEB, OF PHILADELPHIA, PENNSYL-VANIA.

Application filed June 15,

Our invention relates to a new an useful centrifugal fluid fuel burnerhaving a novel draft regulating apparatus wherein a plurality of casingsis employed, each casing having independent draft controlling meanstherefor.

Our invention further relates to a novel burner of this character andits adjuncts wherein a uniform, circular, horizontal 1O flame of arelatively large area is produced and wherein the fluid fuel is finelyatomized and thoroughly consumed to provide maxi mum heating efficiencywith a minimum consumption of fuel.

Our invention further relates to a novel burner of the character statedwherein a uniform controllable air current is supplied to the flame atits outer and inner portions to insure the complete and thoroughcombustion of the fuel used.

Our invention further relates to a novel burner having a gauze screenbelow it whereby all danger of, what is commonly known as ash pit fireand explosion is completely eliminated.

Our invention further relates to a novel burner and its adjuncts of anextremely simple construction wherein the number of parts is reduced toa minimum so that the cost of assembly, maintenance and repair isgreatly reduced.

To the above ends our invention consists of a base. an inner casingsupported thereon. a motor yieldably supported within said inner casing,primary air inlets in the lower portion of said casing, a head and aconical cup shaped member carried on the end of the motor shaft andadapted to be revolved thereby. means for conducting fluid fuel intosaid cup shaped member, an outer casing surrounding said inner casingbelow said bafiie plate and above said primary air inlets. a bafiieplate overhanging said outer casing. secondary air inlets in the lowerportion of said outer/"casing, control means for said secondary airinlets, and means for supporting said outer casing in position.

Our invention further consists in providing our novel burner with ascreen of gauze or the like, intermediate the inner and outerCENTRIFUGAL FLUID-FUEL BURNER.

1928. Serial No. 285,510.

casin and above the motor to prevent the ignition of any unburned gaseswhich might accumulate in the lower portion of said inner casing,thereby eliminating the danger of ash pit fire and explosion.

Our invention further relates to various other novel features ofconstruction and advantage, all as will be hereinafter enumerated anddescribed, and pointed out in the claims appended hereto.

For the purpose of illustrating our invention we have shown in theaccompanying drawings one form thereof which is at pres ent preferred byus, since the same has been found in practice to. give satisfactory andreliable results, although it is to be understood that the variousinstrumentalities of which our invention consists can be variouslyarranged and organized and that our invention is not limited to theprecise arrangement and organizaton of the instrumentalities as hereinshown and described.

Figure 1, represents a vertical sectional view of a draft regulatingapparatus for a fuel burner embodying our invention, certain parts beingshown in elevation.

Figure 2, represents a section on' line 2-2 of Figure 1. k V

Figure 3, represents a section on line 33 of Figure 1.

Referring to the drawings, in which like reference characters indicatelike parts, 1 designates the base or other suitable support on which ournovel burner is installed, and which may rest on the cellar floor 2 orthe like, to which it is anchored in any suitable manner. Supported onthe base 1 and secured thereto in any suitable manner is the innerburner casing 3, provided with the lower primary air inlets 4 and theupper flared rim 5. Within the inner casing 3 and supported on the base1 is the spring 6 or its equivalent, which in turn resiliently supportsthe electric motor 7, provided with the shaft 8 to which is secured theupper disc 9 95 by the nuts 9", juxtaposed cup shaped member having thecontour of an inverted frusto-conical head 10-, said motor beingenergized by the electrical conductor 12.

The cup shaped member 10 is composed of with the flared upper rim 20,which is juxtathe inverted frusto-conical wall 13, the lower end portion14 of which is turned upwardly to form the annular channel 15, whicposed to the offset flared rim 5 of the easing 3, above described. Tothe lower portion of the inner casing 3, and coinciding with the primary.air inlets 4, is secured the damper 2O composed of an annular band orring having spaced openings 21. The ends of said band are. securedtogether by the bolt or rivet 22 passing through the lugs 23. Byvrevolving thedampeig 20 around the inner casing 3, the primary airinlets or ports 4 maybe completely or partially opened or closed atwill, as will be understood fromI-Figures land 3.

Surrounding the inner casing 3 is the upper outer casing 24 havingthesecondary air inlets 25 which are regulated by the rotary damper 26,having the openings 27 said damper being mounted on the casing 24 in thesame manner as the damper 20 heretofore described. The casing 24 issupported on brackets 28 bolted to the inner casing 3 by the bolts 29 aswill be understood from Figure 1.

A screen of gauze or the like 30 is interposed between the outer casing24 and the inner casing 3, at any suitable point above the motor 7, toprevent a flareback within the inner casing 3, due to the accumulationof unburned gases therein. A bafl'le plate 31 surrounds the inner casing3 just below the upper flared rim 5 thereof, and is supported on thebrackets 32 secured to the casing 3 by the bolts 33, and by the columns34, resting on the upper edge of the neck ring 36 and the brick or claylining 35, which latter is reinforced and supported by said neck ring 36the lower channelled part 37 of which is formed integral with the boss38 which engages the head of the supporting column 39, which rests inturn on the cellar floor or the like 1, as will be understood fromFigures 1 and 2. The head 10 is securedto the shaft 8 by the spider 43and the nut 44 in any suitable conventional manner.

The operation is as follows The fluid fuel 16 is fed preferably bygravity through the pipe 18 into the channel 15 of the head 10. Themotor 7 rotates the head 10 and the disc 9 at high rate of due to therising of the heated air through the stack, a current of air is producedwithin the inner casing 3, which travels upwardly in the direction ofthe arrows 42 and passes out through the opening 45 to commingle withtheatomized fluid fuel emanating from the openin 40. The amount of aircurrent thus produced is regulated by manipulating. the damper 20 in themanner heretofore described. To effect a thorough combustion of the fueldischarged into the "outer annular periphery of the circular flame thusproduced, a secondary current of air rises upwardly in the outer casing24, travelling in the direction of the arrows 46 and flows outwardlyunder the bailie plate 31, around and between the sup-- porting columns34, where it commingles with the outermost peripheral portions of theflame and completes the ignition of the heavier particles of fuel and bysupplying oxygen to the outer portions of flame,- produces a uniformthorough combustion, the amount of the secondary air current producedbeingregulated by the damper 26 as is evident.

It will be apparent from the foregoing that by the provision of theinner casing 3 and the outer casing 24, we have provided a plurality ofinner and outer air chambers, the inner chamber bein'g'in relativelyclose proximity to the motor, the burner and .mits the ascending aircurrents to flow around the outer edge or periphery of the baiiie 31 tocommingle with the outer portions of the flame to promote secondarycombustion, both of said air chambers being adapted to admit oxygenindependently or simultaneously to the inner and outer portions of theflame emanating from the burner, whereby an adequate primary andsecondary supply of oxygen is provided, to facilitate completecombustion.

It will be apparent that'the baflie plate 31 coacts with the outer airchamber and serves to facilitate commingling of the air from thesecondary or outer air chamber to the outer portions of the flameemanating from the burner.

It will be further apparent that under some conditions, it will only benecessary to employ the air from the inner air chamber to cooperate withthe flame emanating from issuing from the outer air chamber and that therotation of the head 10 and disc 9, and under other conditions, it maybe desirable to utilize simultaneously both the inner and outer aircurrents.

It will thus be seen from the foregoing that primary and secondarycurrents of oxygen can be admitted to the inner or outer portions of theflame emanating from the burner either independently or simul taneouslyat will.

The provision of the screen or gauze 30 serves as a completepreventative of any back firlng as s evldent, and 1n addltlon.

Having thus described our invention,-

what we claim as new and desire to secure by Letters Patent, is I 1. Ina centrifugal burner, the combination of a vertical motor shaft, carryina fuel cup, having a flared mouth, an' a baflie disk above said mouth,an interior casing having a flared upper end surrounding said mouth andadjustable air inlets in its lower end, a baffle plate surrounding saidcasing near its upper end, and an exterlor casing surrounding saidinterior casing and provided with adjustable air inlets in its ower end,the open upper end terior casing lying below said bafiie plate. 2. In acentrifugal'burner, the combination of a vertical motor driven shaft, aninverted frusto-conical fuel cup, having a flared mouth, carried by saidshaft near its upper end, a baflle disk carried by said shaft above saidmouth, an inner casing surrounding said shaft and cup and having aflared upper end surrounding said mouth,

an outer casing surrounding said inner casing with its open upper endbelow said flared upper end, and a baffle plate surrounding said innercasing and projecting over but spaced from said open u per end.

- JOHN J. SIMM NS.

, RALPH J. DELANEY,

of said ex-

